Any traders know the importance of discipline cannot be overemphasized. The truly powerful traders are very strong self-control and iron discipline.
In the past when there was no automated transaction, earn profit and stop-loss were operated manually. Neither good self-discipline nor strictly implement in accordance with advance formulated trading strategy often ended in failure. Some often placed the wrong order impatiently, or entered the market at an unideal point are attributes to lack of self-discipline, One's self-discipline reflects one's execute power.
A success deal judgement is not only based on whether this transaction is a profit or a loss but as to strictly follow the formulated trading strategy. If not, it is also seen as a failure even with a fluke. Because this mere luck would lead to relax vigilance with its "butterfly effect".
Buddhism has a teaching: the fear of Bodhisattva, the fear of the fruit of sentient beings.
"Self-discipline" corresponds with the Dharma "Six Degrees" of "Precepts".
On a transaction, it is to know where to put the stops, to keep calm after the order is placed; to stay firm on the operating strategy; be calm and be patient; be conscience and thoughtful; be thoughtful can lead to harvest.